We have extracted DNA from plant materials such as tissue samples, spinach, green pea pods, papaya seeds, strawberries, banana flesh, chicken liver, etc.
What is the method of DNA isolation?DNA isolation can be carried out by different methods such as the Phenol-chloroform method, salting out and proteinase K method, an adsorption method, etc.
DNA isolation requires a series of steps that are followed up as per the protocol. It involves various techniques like centrifugation, pipetting, etc.
DNA can also be extracted from the roots of the plants, as well as the disruption of leaves completely.
Therefore, it is well described above.
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Antimicrobiano solutions with water as the solvent are called what solutions, whereas anti microbial solutions with alcohol or water-alcohol solutions are called what?
Antimicrobial solutions with water as the solvent are called aqueous solutions, whereas antimicrobial solutions with alcohol or water-alcohol mixtures as the solvent are called tinctures.
What are Antimicrobial solutions?The antimicrobial solutions are those solutions that are produced from microorganisms which can be used for the treatment of infection caused by harmful microorganisms.
Antimicrobial solutions with water as the solvent are called aqueous solutions, whereas antimicrobial solutions with alcohol or water-alcohol mixtures as the solvent are called tinctures.
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Cells are limited in size because
Select one:
O a. they divide before they have a chance to grow
O b. the cell membrane cannot supply enough
materials for a cell that is too large
O c.
O d.
they are always in groups
they do not have enough vacuoles to store
materials
Answer:
D
Explanation:
because cell are made up of many other tissue and they do not have enough vacuoles to store materials
PLS HELPP
Question 1(Multiple Choice Worth 3 points)
(04.05 LC)
How can the carbon in sediments reach the atmosphere?
Decomposition, fossil fuel formation, fossil fuel emissions
Photosynthesis, organic carbon, cellular respiration
Cellular respiration, diffusion, transpiration
Decomposition, diffusion, evaporation
Question 2(Multiple Choice Worth 3 points)
(04.05 MC)
Which statement best describes the role of animals in the water and carbon cycles?
Animals release carbon dioxide and water vapor as a by-product of cellular respiration.
Animals release carbon dioxide and water vapor as a by-product of photosynthesis.
Animals take in carbon dioxide and oxygen during cellular respiration.
Animals use oxygen to perform photosynthesis and release carbon dioxide as a by-product.
Question 3(Multiple Choice Worth 3 points)
(04.05 MC)
Which list below describes a possible path of rain through the water cycle?
Evaporation, condensation, precipitation, runoff
Runoff, ocean storage, evaporation, condensation
Transpiration, condensation, precipitation, runoff
Evaporation, precipitation, runoff, lake storage
Question 4(Multiple Choice Worth 3 points)
(04.05 MC)
What is the next phase of the carbon cycle for the carbon source labeled A?
Label A shows a collection of coal, oil and gas. Label B shows a collection of trees and vegetation. Label C shows sky and open atmosphere.
© Public Domain
Photosynthesis
Ocean storage
Fossil fuel emissions
Transpiration
Question 5(Multiple Choice Worth 3 points)
(04.05 LC)
Where is the last storage location for melted snow?
Rivers
Ocean
Streams
Mountains
Question 6(Multiple Choice Worth 3 points)
(04.05 MC)
What is a benefit of using nonrenewable resources?
Sustainable energy
No pollution
Clean fuel
Saves money
Question 7(Multiple Choice Worth 3 points)
(04.05 MC)
What is a possible cost of using renewable energy resources?
Non-sustainable energy
Habitat destruction
Costs less money
Fossil fuel emissions
Answer:
es ingles
Explanation:
dnkxkddnnxdidiiddieisikswnsxxxxxxxxxxxxxdxdxxdxdxd
As a result of human activities, what has happened to the other species' populations?
A) Human activities have had no impact on other species' populations
B) 99% have grown
C) 66% are declining
D) 100% have seen a decrease
As a result of human activities, in the other species' populations:
C) 66% are declining
There is no denying that human activity has interfered with the planet's normal cycle of life. Human civilization has progressed over time but at an unmatched, alarming rate of environmental destruction. According to a new analysis, human activity is causing wildlife numbers to decline at an alarming rate.What is the Impact of the growing human population?With an expanding global population, our environment is under tremendous stress. From a very commonsense perspective, the size of the planet we live on is fixed, and the Earth is not becoming bigger. Although a substantial portion of Earth remains uninhabited and "unused," there is a reason for it: the surroundings do not fulfill (human) requirements.The sulfur dioxide that enters the atmosphere before raining back down on Earth is what gives acid rains their name.Desertification is a larger-scale form of deforestation. Some portions of Earth become deserts as a result of unchecked human resource consumption.To learn more about the Impacts of the human population, refer to:
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Match each biodiversity restoration method to its description.
tiles
reforestation
biological augmentation
bioremediation
Chart
using plants to control a native plant population
using plants to absorb harmful compounds
using plants to increase biodiversity and food resources
Match each biodiversity restoration method to its description we have:
reforestation: using plants to increase biodiversity and food resourcesbiological augmentation: using plants to control a native plant populationbioremediation: using plants to absorb harmful compounds. What are ecological restoration techniques?Some examples of induced ecological restoration methodologies are the conduction of natural regeneration, nucleation techniques, enrichment or diversity planting, among others.
In this case, the ecological restoration techniques are:
reforestation: using plants to increase biodiversity and food resourcesbiological augmentation: using plants to control a native plant populationbioremediation: using plants to absorb harmful compounds.See more about ecological restoration at brainly.com/question/1331136
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In your lab you are studying the genome of venomous rattlesnakes to find the gene which codes for their venom glands. One rattlesnake has a mutation and cannot produce venom. You compare his DNA to a normal rattlesnake. What type of mutation has occurred?
Normal: AATCGCTACGCACGTCAG
Mutated: AATCGCCATGCACGTCAG
A. Inversion
B. Insertion
C. Point mutation
D. Deletion
The type of mutation that occurred here is an inversion of three nucleotide bases (Option A).
What is an inversion?An inversion is a type of mutation where linear order of nucleotide in the mutated sequence is inverted.
In this case, we have an inversion that involves the following bases (bold highlighted) AATCGC TAC GCACGTCAG and AATCGC CAT GCACGTCAG.
In conclusion, this mutation is an inversion of the genomic sequence (Option A).
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How are services provided by a healthcare institution described when a claim is submitted ? a) They're submitted in writing on a prescription pad. b ) They're handwritten on the official letterhead of the institution and containing the practice number of the physician . c ) They're assigned numeric and alphanumeric codes . d ) They're provided in the form of the patient's records .
Services provided by a healthcare institution is described when a claim is submitted by assigned numeric and alphanumeric codes and is denoted as option C.
What is Medical coding?This is the transformation of treatment, services etc into numeric and alphanumeric codes.
This is usually done to prevent ambiguity of information for proper understanding and for appropriate action to be taken.
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Support or reject the following statement:
"Cellular respiration is a process that only occurs in animals, while photosynthesis is a
process that occurs in plants."
Use evidence to support your answer (e.g. facts, processes, concepts you have learned about in
your readings, lecture, or previous biology classes)
Answer:
False
Explanation:
This is like the statement "A square is a rectangle but a rectangle isn't a square". In that case, a square can be classified as two things. Same with a plant. A plant can use cellular respiration as well as photosynthesis but an animal can only use cellular respiration.
What is the difference between a Triglyceride and a Phospholipid?
A. Triglycerides have 2 fatty acid chains, Phospholipids have 3.
B. Triglycerides have a phosphate group, Phospholipids do not.
C. There is no difference, they are the same thing.
D. Phospholipids have a phosphate group, Triglycerides do not.
A. Triglycerides have 2 fatty acid chains, Phospholipids have 3.
What is the difference between a Triglyceride and a Phospholipid?
The main difference between the structures of phospholipid and triglycerides is that a phospholipid molecule is made up of a glycerol attached to two fatty acids and a phosphate group while on the other hand, triglyceride is composed of three fatty acid groups.
So we can conclude that option A is the correct answer.
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The main difference between a Triglyceride and a Phospholipid is that Phospholipids have a phosphate group, while Triglycerides do not (Option D).
What is a Phospholipid?A Phospholipid is a lipidic molecule that contains a phosphate group, which represents the main component of the cell membrane.
Conversely, Triglycerides are lipids composed of three fatty acid chains linked to a glycerol backbone.
In conclusion, Phospholipids have a phosphate group, while Triglycerides do not (Option D).
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functions of stem help
Explanation:
What is stem ?
= Stem is the part of the plant which grow above the ground....
Function :The major function of stem are production and support to the branches , leaves , buds , flowers , seeds etc. It also helps in conduction of water , minerals and foods in different part of the plant...
Besides this primary functions , the stem of some plants are modified into different shapes , size and structure and perform some special functions as an perennation , vegetative propagation, storage , food production etc....
[tex]...[/tex]
how is information conveyed from one place to another? class 4
Answer:
Nervous tissue is made up of neurons that receive and conduct impulses. Neurons are highly specialised for being stimulated and then transmitting the stimulus very rapidly from one place to another within the body. Impulses are the passage of electrical activity along the axon of a nerve cell.
QUESTION 3 (a) Describe the path followed by water from the soil, through the plant and into the atmosphere .
a land plant uptakes water from soil by roots, distributes water through the xylem to other parts I'd the plant, and transpires water vapor into the atmosphere from the leaves.
Explanation:
I looked it up. I really hope this helps!
Describe three characteristics of ultra processed foods that make it unhealthy for your body
1. Processed foods tend to contain added sugar and, often, high fructose corn syrup. Added sugar contains no essential nutrients but is high in calories.Regularly consuming an excess of added sugar can lead to compulsive overeating. It is also linked with health conditions such as obesity, metabolic syndrome, type 2 diabetes, and inflammatory diseases.
2. The ingredients list on the back of processed food packaging is often full of unrecognizable substances. Some are artificial chemicals that the manufacturer has added to make the food more palatable. Also, processed foods can contain dozens of additional chemicals that are not listed on their labels.
3. Carbohydrates are an essential component of any diet. However, carbs from whole foods provide far greater health benefits than refined carbohydrates.The body breaks down refined, or simple, carbohydrates quickly, leading to rapid spikes in blood sugar and insulin levels. When these levels then drop, a person may experience food cravings and low energy.Because refined carbs cause frequent increases and decreases in blood sugar, consuming them is linked with an increased risk of type 2 diabetes.
What is not one of the four key postulates from Charles Darwin's idea of evolution by natural selection?
Individuals within a species vary in their traits
Some of these variations are passed on to offspring
In every generation, more offspring are produced that can survive
The survival and reproduction of individuals are random
Answer:
the survival an reproduction are random
What two processes make up cell division
Answer:
Mitosis and Meiosis
How does cell division work?The cell that is dividing in a cell division process is referred to as the parent cell. Upon division, the parent cell produces two daughter cells. The next phase, known as the cell cycle, involves repeating the procedure.
Cells control their division by exchanging chemical signals via unique proteins called cyclins with one another. These signals function as switches that inform cells when to begin dividing and afterwards when to stop. For you to develop and for your wounds to heal, cells must divide. Cells must also cease dividing at the appropriate moment. Cancer can result from a cell's inability to stop dividing when it should, which is a condition known as cell division failure.
Now, how do cells divide?
There are two ways for cells to divide, depending on the type: mitosis and meiosis. Each of these strategies for cell division has unique qualities. A single cell splits into two identical cells with the same number of chromosomes during mitosis, which is one of the major distinctions between the two processes. Cell division of this kind is beneficial for fundamental development, repair, and maintenance. A cell divides into four cells during meiosis, each of which has half as many chromosomes. To promote genetic variety and sexual reproduction, the number of chromosomes must be cut in half.
Answer:
Mitosis and Meiosis
Explanation:
There are two types of cell division: mitosis and meiosis. Most of the time when people refer to “cell division,” they mean mitosis, the process of making new body cells.
Guinea pigs can produce different coat colors, white, brown, and mixed white/brown (agouti). The allele B is codominant with allele W (white coat). Cross an agouti colored Guinea pig with a brown Guinea pig. What are the odds of the offspring; 1/2 homozygous white, 1/2 heterozygous brown; 1/4 homozygous brown, 1/2 heterozygous agouti, 1/4 white; 1/2 heterozygous brown, 1/2 homozygous
In a cross of an agouti heterozygous (AB) colored Guinea pig with a brown (BB) Guinea pig the odds of the offspring is 1/2 WB and 1/2 BB (1/2 heterozygous agouti, 1/2 homozygous brown).
What is codominance?Codominance is a genetic phenomenon where both alleles are expressed in heterozygous individuals.
In this case, the allele B is codominant with allele W and produces heterozygous (WB) colored Guinea pigs such as one of the parents.
In conclusion, this cross will produce 1/2 BB and 1/2 WB (1/2 heterozygous agouti, 1/2 homozygous brown).
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Contrast how the shape or polarity of two different cellular communication molecules are detected by their target cell differently: oligosaccharides on cell surfaces, neurotransmitters, steroid hormones, polar hormones.
Cell receptors located on the surface identify specific signals and thus trigger different signaling pathways.
What is a cell receptor?A cell receptor is any type of macromolecule in the cell surface that binds to a specific ligand and thus triggers a concomitant cell response.
Cell receptors such as surface oligosaccharides or hormone receptors may trigger the activation of transcription factors and genes associated with phosphorylation in a signaling pathway.
The shape and polarity of communication molecules are fundamental to achieving effective binding by means of cell surface receptors.
In conclusion, cell receptors on the cell surface trigger signaling pathways.
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Why does the nose the feet and the tail of a rat have no hair
Answer:
A rat's tail lacks hair or fur for two main reasons. The first is more efficient heat dissipation. Without insulating fur or hair, the tail can lose heat more easily. The second reason for the hairless nature of the rat's tail is grip. These reasons are the same for the feet, but for the nose it is to enhance smell.
Part 3:
Table 3
Sequence
of the 9
Example:
1-A
2-T
3-C
Nitrogen
Bases
4-
in
5-
6-
8-
9-
7-
Original
Codon
Pattern
ATC
Original Amino
Acid
Isoleucine
Mutation
#1:
Sequence
of
Nitrogen
Bases
A
C
T
Mutation
#1
Codon
Pattern
ACT
Mutation #1
Amino Acid
Threonine
Mutation
#2
Sequence
of
Nitrogen
Bases
A
с
с
Mutation
#12
Codon
Pattern
Mutation #2
Amino Acid
ACC Threonine
XXXX
XXXX
Answer:
Mutation
#12
codon
puttern
Mentation #2
Amino Acid
ACC Threonine
XXXX
XXXX
How do limiting factors determine the carrying capacity of an ecosystem?Why is sod valuable? a. loses fertility c. prevents soil erosion b. loses topsoil d. causes soil erosion
Limiting factors affect the carrying capacity by limiting available resources and regulating population sizes. Sod is valuable because it prevents soil erosion. Option C.
How limiting factors affect the carrying capacity?
The carrying capacity is the capability of the environment to support a growing population. It might be affected by different factors, known as limiting factors.
Limiting factors might depend on population density or be density-independent.
Density-dependent factors → depend on the population size → intra- and interspecific competition or predation.These factors are related to the interaction between populations and species. They might compete for resources (in which case resources become limited, affecting population sizes) or might establish a predator-prey relationship (in which case, predators and prey depend on each other and regulate their population size).
Density-independent factors → do not depend on the population size → Human impact or natural disasters (fires, volcanic eruptions, flooding).
Density-independent factors cause damage to the ecosystems, reducing the available resources such as food, water, or shelter and consequently decreasing the number of individuals. These factors reduce the carrying capacity of the environment.
In both cases, limiting factors regulate population size.
What is erosion?Erosion is the fertile soil loss process that leads to its degradation. It is due to several external agents that damage the ground and drag the exposed material from the superficial layers.
All the erosive agents act together, altering the soil composition, shape, and structure.
Some erosive agents are water, wind, ice, gravity, and animal trampling.
The loss of natural plant cover aggravates the erosive effects since no plants are protecting the soil.
Soil plant cover reduces erosion because the aerial part of the plant protects the surface, while roots protect the ground structure and absorb water.
Several grass species develop large roots to establish themselves on the ground. This characteristic helps to reduce erosion and to keep soil humidity.
In conclusion,
Limiting factors regulate population size.Plant cover avoids erosion. So, the correct option is C. Sod is valuable because it prevents soil erosion.You can learn more about erosion and limiting factors at
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A company is looking for an employee to assist users who are having difficulty logging into their online accounts. Which computer field most likely includes this job?
A company is looking for an employee to assist users who are having difficulty logging into their online accounts. Which computer field most likely includes this job?
Information Support SpecialistHow are primary and secondary succession similar? a. both primary and secondary succession involve ecosystems that have no soil. b. both primary and secondary succession involve ecosystems recovering from a disruptive event. c. both types of succession require a pioneer species to aid recovery of ecosystems. d. primary and secondary succession have no similarities. please select the best answer from the choices provided a b c d
Both primary and secondary succession involves ecosystems recovering from a disruptive event. Thus, option "B" is correct.
What is Primary succession?Primary succession occurs following an opening of pristine habitat, for example, a lava flow, an area left from retreated glacier, or abandoned strip mine. In contrast, secondary succession is a response to a disturbance, for example, forest fire, tsunami, flood, or an abandoned field.
Primary succession begins in barren areas, such as on bare rock exposed by a retreating glacier. Secondary succession follows a major disturbance, such as a fire or a flood.
Thus, option "B" is correct.
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Which of the following is the primary source of energy for the brain?
Answer:
Glucose
Explanation:
Because of the following factors, glucose serves as the brain's primary energy source. Glucose may be easily catabolized to provide energy to the brain since it cannot tolerate interruptions in energy flow. Since the brain cannot store calories, a quick supply of chemicals that can provide energy is essential for the brain's smooth operation. In this situation, blood can easily transfer glucose. Although fatty acids provide a source of energy for the rest of the body, they are unable to cross the blood-brain barrier because they are bound to blood albumin in blood plasma. These justifications explain why glucose serves as the brain's main source of energy. Ketone bodies could be the secondary source.
What is the process where inorganic molecules are converted to an energy source?
Select one:
O a. Photosynthesis
O b. Thesis
O c. Cellular respiration
O d. Chemosynthesis
Answer:
A. Photosynthesis
Explanation:
Green plants and certain other creatures convert light energy into chemical energy through a process called photosynthesis. Light energy is gathered and utilized during photosynthesis in green plants to change water, carbon dioxide, and minerals into oxygen- and energy-rich organic molecules.
Which of the following is not a celestial object (1) the Sun (2) the Moon (3) a rainbow (4) a star
How do monosaccharides combine to form polysaccharides?
by removing oxygen (O2) from the monosaccharide molecules
by removing hydrogen (H2) from the monosaccharide molecules
by adding water (H2O) to the monosaccharide molecules
by removing water (H2O) from the monosaccharide molecules
Monosaccharides combine to form polysaccharides by removing water (H2O) from the monosaccharide molecules. This is called dehydration.
Many monomers of monosaccharides combine to form polysaccharides. For example- many monomers of monosaccharide glucose combine to form starch, which is a polysaccharide. When molecules of monosaccharides combine, the removal of water molecules takes place. This reaction is called a dehydration or condensation reaction.First of all, a disaccharide is formed due to a condensation reaction in which two monosaccharides combine and a glycosidic bond is formed. Then, many condensation reactions take place between disaccharides, resulting in the formation of polysaccharides.Hence, when several monosaccharides combine, they lose water, resulting in the formation of polysaccharides.
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Describe how the shape and size of nucleotides are important in the structure of double-stranded DNA.
The shape and size of nucleotides are important in the structure of double-stranded DNA because it allows DNA replication and protein synthesis to occur.
What is DNA?This is referred to as deoxyribonucleic acid and contains the genetic instructions in organisms.
The double stranded shape and size allows for a copy of DNA to be made during reproductive processes. This is therefore the reason why DNA has such shape and size in this context.
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Whats the correct answer answer asap
Answer:
terrace
Explanation:
agricultural system used on hilly lands
In photosynthesis, water and carbon dioxide become
oxygen and carbohydrates, in the presence of light.
light, in the presence of oxygen and carbohydrates
light and oxygen, in the presence of carbohydrates
carbohydrates, in the presence of oxygen and light
Answer:
what is the question in this .........
Please help me I will give brainiest!!
A wet-mount slide of red onion cells is studied using a compound light microscope.
One of the cells has seen under high power is shown below in the picture (Sorry the picture is bad)
Part A: identify the name of each structure A, B, and C.
Use the terms listed as a word bank. Cell wall, Cytoplasm, and cell membrane.
Part B: A highly concentrated Salt solution has been added to the slide that this plant cell is on. Explain in detail what you would expect to see happening to the plant cell as a result.
Part A: A= cytoplasm, B= cell wall and C= cell membrane.
In Part B under this condition, we expected to see the phenomenon called plasmolysis.
How, explain your answer briefly?Eukaryotic cells consist on a cytoplasm (internal medium) which contains different organelles. Covering the cytoplasm we found a first thin layer called cell membrane and an external rigid layer called the cell wall.
When a cell is subjected to a media with a salt concentration higher than salt concentration inside the cell (hypertonic media), water inside the vacuole (an organelle that constitutes almost 90 % of cell volume and contains water) tends to move out of the cell in response to the concentration gradient.
This phenomenon is called plasmolysis and is possible because of the permeability characteristics of cell membrane and cell wall.
Thus, this could be the answer.
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